I have Gotham's much smaller and poorer younger brother Fathom f112v2-GLOSS. Is it worth 4k? No, Is it worth 2k open box demo, YEP. I only run one in a 19x24 room. Theplan is to get a second, if I can get another good deal on one. As a single sub, it is very competent. I agree with the comments that the build quality is impeccable and performance for it's size is at the higher end of the spectrum, but there are definitely alternatives that perform as well for less.